In this lesson, we will look at the formula used to calculate the area of a rectangle. You will learn it with the help of
some examples and practice questions with solution, using video explanations by
the instructor.
A rectangle is a four sided polygon, where opposite sides are parallel and congruent. The area of a rectangle can be obtained
by multiplying the lengths of the two sides. If length of one side is l
and the length of the other side is w, then the area of the rectangle is given by
the formula: Area = l x w. For example, the area of a rectangular room of dimensions 10m and 20 m is 200 m^{2}. (More text below video...)
(Continued from above) The formula for finding the area of a rectangle
can also be used to find the length of one side, if we know the area and the dimension
of the other side.
length = Area/width.
width = Area/length.
For example: if the area of the rectangle is 120 cm^{2} and the length is
12 cm, then width works out to 120/12 = 10 cm.
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